Means for making cast bowling pins



R. E- STANLEY, SR.

MEANS FOR MAKING CAST BOWLING PINS.

Patented July 11, 1922.

APPLICATION FILED MAY 4, 1921.

E J L n [@4513 fiiaizard RICHARD E. STANLEY, SR., OF PITTSBURGH, PENNSYLVANIA.

MEANSEOR MAKING CAST BOWLING PINS.

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" Be it known that I, RICHARD ESTANLEY, S12, citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Means for Making Cast Bowling Pins, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to means for making bowling pins and has for its object to provide means whereby the. pin when cast is complete, no finishing being necessary.

The primary object of the invention is to provide means whereby the weight of the sand core is properly sustained by a stem wh'ch extends substantially longitudinally of the core, said stem being readily re movable. I It is another object of the invention to providemeans for not onlyholdingthe core spacedfrom the print of the moldfbut to prevent relative movement of the core and 'itssupport. f

Theinvention has roman another obj ect to provide means whereby openings are formed inthe head an'dbottom "of the pin, the opening in the head being smaller than the opening in the bottom.

With these and" other objects in view, the invention consists in the improved construction and arrangement of parts'to be hereinafter more particularly described, fully claimed and illustrated in the accompanying drawings in which 2-- .Figure 1 is a horizontal sectional view through the molded pin and the sand core, showing the mold open and the stem and pin in place,

Figure 2 is a transverse sectional view of the sand core and its supporting stem,

Figure 3 is a perspective view of the stem,

Figure 4 is a perspective view of the pin, and

Figure 5 is a longitudinal sectional View of the cast pin.

, Referring to the drawings, 5 and 6 designate two sections of a mold provided with sand prints of the shape desired.

With the method previously used, for casting devices of this character, it has been found that the support of the core does not properly sustain the weight of the core, consequently the cast of the pin is not per feet as the core is not maintained in the Specification of Letters Patent. Patented July 11, 1922. Application filed May 4, 1921. Serial No. 466,642.

proper spaced relation to the print of the mold.

In order to overcome this disadvantage and at the same time provide a core which will remain stationary upon the support, there is provided a novel metal supporting stem 7 which is hollow, and relatively large in diameter, the diameter of the stem, however, is not great enough to interfere with the formation of the core around the neck of the pin or smallest diameter of the coreand yet is rigid enough to prevent sagging of the core within the print of the mold. The walls of the stem are provided with a series of circular perforations 8. A sand core 9 is formed on the stem 7, portions of the core being forced into the openings 8 to serve as anchors for the core and prevent movement of the core on the stem so that the diameter of the stem does not interfere with the adhesion of the core thereto. It will be noted that the end 10 of the stem projects beyond the large end of the core, and is adapted to support one end of the core with respect to the pr nt, the opposite end of the stem terminating closely adjacent the small end of the core. 7 j

A pin 11 is disposed within the small end a of the core, one end portion of the pin extending into'the adjacent end of the stem, the opposite end of the pin extending beyond the print of the mold so as to hold the same rigid. Provision is made to compensate for the differences in diameter of the pin 11 and the stem 7 so that the core 9 will be maintained in the proper spaced relation to the print of the mold. As the diameter of the pin 11 is less than the diameter of the stem, a small opening is formed in the head of the cast pin substantially corresponding in diameter to the diameter of the pin 11. The pin 11 is adapted to be removed through the opening in the top of the pin and the stem through the opening in the bottom of the pin.

By the formation of the openings 8 in the stem, the core is firmly fixed to the stem so that longitudinal or rotary movement of the core upon the stem is impossible, regardless of the diameter of the stem. Danger of the cast A being imporperly formed is thereby eliminated.

It will be noted that the heaviest portion of the core is supported by the stem 7. Regardless of this, the weight of the molten the same to sink or become improperly positioned within the mold, as the weight of thehollow stemis no greater than the weight of a solid stem smaller in diameterr From the foregoing itjwill be readily seen that this invention provides novel means for casing hollow bowling pins, and'wherein the core is properly sustained without the necessity of employing spacing elements between the sides of the core and the mold so that the pin A maybe cast with acontinuous one piece metal wall. Another feature 'is that it permits the casting of bowling pinsvata very-small expense and atthesame time is capable of producing a pin which complies with all the requirements set forthin the rules of the game. It also eliminates all the disadvantages of the method or means previously used and provides a novel core support which is simple in construction, accurate and durable.

- What is claimed is 1. Means for'making hollow east bowling pins including a hollow stem, a core formed on the stem,'one end portion of said stem projecting beyond the endof the core, the opposite end portion terminating adjacent the opposite end of the core, and a pin disposed in the last mentioned end of the-core and projecting beyond the core.

2. Means for making hollow cast bowling pins including a hollow stem, a core formed on the stem, one end portion of said stem projecting beyond the end of the core, the opposite end portion terminating adjacent the opposite end of the core, and a, pin disposed in the last mentioned end ofthecore and projecting beyond the same, "said pin being of a diameter less than the diameter of the stem;

3. Means for making hollow cast bowling pins including a hollow perforated stem, a core supported by said stem, portions of the core extending into the perforations to anchor the core on the stem, the diameter of the smallest portion of the core being substantially twice as great as the diameter of the stem, and a pin smaller in diameter than the diameter of the stem, said pin projecting from the small end of the core and adapted to cooperate with the stem to support thecore, whereby molten metal poured upon the core will not cause'displacement of the core during solidification of the metal.

4:. Means for making hollowcast bowling pins including a hollow stem provided with a series of openings, a core iormed on the a stem, one end portion of said stem projecting beyond the endjofthe core, the opposite end portion of the stem terminating adjamounted in thelast mentioned end of the core, one end of said pin extending into the hollow stem, the opposite end of the pin projecting beyond the lastmentioned end of the core.

signature. 7

cent the opposite end of the core and a pm I "In testimony whereof I hereuntoaffiiimy RICHARD STANLEY,SR. 

